package cn.zjitc.anno;


import org.aspectj.lang.ProceedingJoinPoint;
import org.aspectj.lang.annotation.*;
import org.springframework.stereotype.Component;

// 切面对象
@Component("myAspect")
@Aspect // 标注当前MyAspect是一个切面类
public class MyAspect {

    // 配置前置通知
//    @Before("execution(* cn.zjitc.anno.*.*(..))")
    public void before(){
        System.out.println("前置增强...");
    }

    public void afterReturning(){
        System.out.println("后置增强...");
    }

    // ProceedingJoinPoint：正在执行的连接点 == 切点
//    @Around("execution(* cn.zjitc.anno.*.*(..))")
    @Around("pointcut()") // 效果等同于    @After("MyAspect.pointcut()")
    public Object around(ProceedingJoinPoint pjp) throws Throwable {
        System.out.println("环绕前增强...");
        Object proceed = pjp.proceed();// 切点方法
        System.out.println("环绕后增强...");
        return proceed;
    }

    public void afterThrowing(){
        System.out.println("异常抛出增强...");
    }

    @After("MyAspect.pointcut()")
    public void after(){
        System.out.println("最终增强...");
    }

    // 定义切点表达式
    @Pointcut("execution(* cn.zjitc.anno.*.*(..))")
    public void pointcut(){

    }
}
